I just got my iAudio 9 from Amazon and I'm hoping ya Cowon users can help me with my issue. My personal ear buds that I use don't sound good with the iAudio9. The sound that comes out is distorted and it sounds really bad . My headphones are Klipsch s4. I also tried my brothers Skull Candy headphones and the same thing happens, and when I use the headphones that came in the package with the iAudio9 they work fine. WTF.So do the Cowon's only work with their own headset?